Xacto X3201 N0. #1 Precision Knife This is an X-Acto No. 1 Knife, with a safety Cap. The X-Acto no. 1 precision knife is built with a carbon steel blade for a long lasting edge that provides a reliable cut every time. Attaining this level of precision, accuracy and reliability starts with supreme quality craftsmanship Attaining this level of precision, accuracy and reliability starts with supreme quality craftsmanship